JP3783161B2 - Press transfer device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a press transfer apparatus that sequentially transports a plurality of supply workpieces onto a die of a press machine using a pair of transfer bars arranged side by side.
[0002]
[Prior art]
As a press transfer device in the prior art, one end of a link is pin-connected to the tip of a pair of feed bars arranged side by side, and the first arm fixed to the shaft of a feed drive servo motor is connected to the other end of the link Then, the first arm is swung by a predetermined angle to give a feed motion to the pair of feed bars, and the middle of the second arm is placed on the shaft of the servo motor for driving the clamp provided between the feed bars at both ends of the pair of feed bars. Clamping operation in which a pair of feed bars are fixedly held at both ends of the second arm so as to be movable in the feed direction, and the distance between the pair of feed bars is reduced or expanded by the swinging motion of the second arm by a servo motor for driving the clamp. And the technology that sequentially conveys the workpiece onto the die of the press machine by the feed operation by the feed drive servo motor. Are (see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-10866 (paragraphs 0008, 0009, FIG. 1)
[0004]
[Problems to be solved by the invention]
By the way, the above-mentioned conventional press transfer device uses a pair of feed bars to sequentially feed a workpiece onto a die of a press machine, in order to give a feed motion and a clamp / unclamp motion to the pair of feed bars. Two servo motors are used as the drive source.
[0005]
Therefore, by using two servo motors for feed motion and clamping / unclamping motion for a pair of feed bars, an appropriate speed can be controlled, but an extra drive source is required and these independent motions are synchronized. In addition to the need for a control device and a sensor for confirming the position, it is necessary to synchronize the processing operation of the press machine and the feed operation, so it is necessary to set many peripheral devices and control response to them. Had the problem of becoming complicated.
[0006]
Accordingly, the purpose of the present invention is to eliminate the need for conveyance and a driving source dedicated for clamping and a detection device for operation confirmation, and to provide a mechanically simplified press that can convey quickly and reliably. It is to provide a transfer device.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following technical means. That is, using the reference numerals used in the accompanying drawings corresponding to the embodiment,
In a press transfer apparatus that sequentially transports a plurality of supply workpieces W onto a die of a press machine M using a pair of transfer bars TB1 and TB2, the transfer bars TB1 and TB2 are arranged on the rear end side. A pair of feed bars 4A and 4B and a clamp bar 5A, which are superimposed and supported on the base 26 so as to be reciprocally movable in a straight line by a driving mechanism D provided on the base 26 and extended so that the front end faces the inside of the mold. 5B, on the front end side of the transfer bars TB1 and TB2, the clamp bars 5A and 5B and the feed bars 4A and 4B supported on the upper surfaces of the clamp bars 5A and 5B in a synchronous and relative manner. The reciprocating rectilinear movement and the opening / closing operation orthogonal to the rectilinear movement are performed by the interaction of the reciprocating rectilinear movement. Has a pump pawl 32A, the clamp mechanism 28 and 32B were opposed, the clamp mechanism 28, the transfer bars TB1, TB2 distal end side of the pair of frames 30A disposed in parallel with the both outer side surfaces near the 30B, The clamp claws 32A, 32B are arranged at predetermined intervals in the longitudinal direction so that the tip gripping portions H1, H2 face each other between the frames 30A, 30B, and are orthogonal to the pair of feed bars 4A, 4B. Are supported in such a manner as to be able to advance and retreat, and project inward from the longitudinal front and rear portions of both frames 30A and 30B, and the longitudinal direction between the upper and lower feed bars 4A and 4B and the clamp bars 5A and 5B. It comprises a pair of actuating pieces 35 coaxially provided with actuating pins 34A and 34B which are guided and supported so as to be able to advance and retreat in an orthogonal direction and which are perpendicular to the upper and lower surfaces. A pair of left and right inclined grooves 38 that are inclined at a predetermined inclination angle in plan view with respect to the straight direction are formed symmetrically at the front and rear portions of the support surfaces of the pair of clamp bars 5A and 5B so as to be fitted to the lower ends of 34A and 34B. At the same time, a pair of horizontally long grooves 40 perpendicular to the straight conveyance direction on the support surfaces of the pair of feed bars 4A and 4B in correspondence with the pair of inclined grooves 38 to be fitted to the upper ends of the pair of operating pins 34A and 34B. Through the operation pins 34A and 34B fitted into the pair of inclined grooves 38 by the relative movement of the pair of clamp bars 5A and 5B and the pair of feed bars 4A and 4B in the relative conveying direction. The clamp claws 32A, 32B are opened and closed, and the pair of laterally long grooves 40 is moved by the synchronous back-and-forth movement of the pair of clamp bars 5A, 5B and the pair of feed bars 4A, 4B. The press transfer device is characterized in that the clamp claws 32A and 32B are moved back and forth in the conveying direction via the operating pin located at any one of the ends .
According to the above, when the pair of drum cams 10 and 12 is rotationally driven by the activation of the press machine M, the top and bottom are overlapped and guided and supported so as to be capable of rectilinear reciprocation, and the tip extends so as to face the inside of the mold. Transfer bars TB1 and TB2 comprising a pair of feed bars 4A and 4B and clamp bars 5A and 5B are fed by a pair of levers 14 and 15 that swing at different swing angles via a pair of conversion means C1 and C2. 4A, 4B and the clamp bars 5A, 5B are synchronously and relatively linearly reciprocated, and are orthogonal to the reciprocating linear movement of the plurality of clamp claws 32A, 32B opposed to each other at predetermined intervals in the longitudinal direction and the linear motion. Opening and closing operations are performed. In addition, when the pair of left and right feed bars 4A and 4B and the clamp bars 5A and 5B that are superimposed on each other perform relative reciprocal rectilinear movement, a pair of operations fitted into a pair of left and right inclined grooves formed symmetrically. When the clamp claws 32A, 32B are opened and closed via the pins 34A, 34B, and the pair of left and right feed bars 4A, 4B and the clamp bars 5A, 5B are reciprocally moved in a straight line, one of the pair of horizontally long grooves 40 The clamp claws 32A and 32B are moved back and forth in the conveying direction via the operating pins 34A and 34B located at the end of the sheet.
Therefore, due to the interaction between the pair of feed bars 4A, 4B and the clamp bars 5A, 5B extended so as to face the inside of the mold using the driving force of the press machine M, the synchronous and relative linear reciprocating movements. A reciprocating linear movement and opening / closing operation of the plurality of clamp claws 32A, 32B, and a repetitive conveyance of a plurality of workpieces W to a die machining position mechanically synchronized with the machining operation of the press machine M By omitting the detection device for checking the operation, it can be mechanically simplified and can be transported quickly and reliably.
In addition, a pair of operating pins on the upper and lower surfaces of the clamp bar projecting inwardly from the longitudinal front and rear portions of the pair of frames disposed in parallel in the vicinity of both outer surfaces near the front end of the transfer bar, The pair of frames can be opened and closed in the width direction only by reciprocating linear movement of the pair of feed bars and clamp bars by being respectively fitted to the inclined grooves or the horizontally long grooves of the feed bar, and directed inward to the pair of frames. The plurality of clamp claws arranged at predetermined intervals so as to oppose each other perform an opening / closing operation and a reciprocating linear movement when the clamp claws are opened / closed, so that a large number of workpieces can be conveyed repeatedly at the same time.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 is an overall plan view of a press transfer apparatus according to an embodiment of the present invention, FIG. 2 is an overall side view of the press transfer apparatus, FIG. 3 is a cross-sectional view taken along line AA in FIG. -B sectional view, FIG. 5 is a sectional view taken along the line CC in FIG. 3, FIG. 6 is an explanatory view showing a swing range of the feed lever and the clamp lever, and FIG. 7 is a clamp mechanism operating piece fitted in the inclined groove of the clamp bar. FIG. 8 is a partial plan view showing the relationship between the operation pin of FIG. 1 and FIG. 8 is an enlarged view of the portion X in FIG. 1 showing the relationship between the operation pin and the clamp arm of the clamp machine fitted in the laterally long groove of the feed bar. -D sectional view, FIG. 10 is an EE sectional view of FIG. 8, and FIG. 11 is an operation explanatory view showing the relationship between the cam diagram of the press machine and the cam diagram of the transfer bar or the cam diagram of the clamp mechanism. It is.
[0009]
1 and 2, reference numeral 1 denotes a press transfer device according to the present invention. This press transfer device 1 presses a plurality of supply workpieces W using a pair of transfer bars TB1 and TB2. The machine M is sequentially conveyed onto a mold (not shown).
[0010]
The transfer bars TB1 and TB2 are vertically extended by a driving mechanism D provided on the rear end side so as to be vertically reciprocated so as to be guided and supported on a base 2 which will be described later and extended so that the front end faces the inside of the mold. It comprises a pair of feed bars 4A and 4B and clamp bars 5A and 5B.
[0011]
Next, the drive mechanism D for reciprocating the transfer bars TB1 and TB2 will be described.
[0012]
The drive mechanism D is housed in a housing configured in the shape of a rectangular parallelepiped as the base 2, and the driving force of the press machine M extends outside the housing 2 as shown in FIGS. 3 to 5. It is transmitted to a pulley 6 mounted on the camshaft 8.
[0013]
The cam shaft 8 is rotatably supported at both ends in the housing 2, and a pair of drum cams 10, 12 having cam grooves 10 A, 12 A formed on the outer periphery on the cam shaft 8 are separated and fixed. It is installed.
[0014]
In the housing 2, a feed drive shaft 16 as a first swing shaft and a clamp drive shaft 18 (see FIG. 5) as a second swing shaft corresponding to the pair of drum cams 10 and 12 are cam shafts. 8 are supported so as to be rotatable in the vertical direction perpendicular to each other.
[0015]
Cam followers 16B and 18B are fixed to the outer periphery of holders 16A and 18A provided in the center of the feed drive shaft 16 and the clamp drive shaft 18, and these cam followers 16B and 18B are formed on the outer periphery of the drum cams 10 and 12, respectively. By engaging with the cam grooves 10A and 12A, the constant rotation of the feed drive shaft 16 and the clamp drive shaft 18 is converted into a swing operation for obtaining different swing angles for a pair of feed lever 14 and clamp lever 15 described later. Conversion means C1 and C2 are configured.
[0016]
At the upper ends of the feed drive shaft 16 and the clamp drive shaft 18 projecting from the upper surface of the housing 2, the feed lever 14 and the clamp lever 15 having cam followers 14A and 15A fixed to the upper surfaces of the respective distal ends are mounted so as to be swingable on a horizontal plane. Has been.
[0017]
A pair of guide rails 24A and 24B are arranged in parallel on the left and right sides of the upper surface 2A of the housing 2 in the conveying direction. Both ends of the guide rails 24A and 24B are supported at both ends so as to be orthogonal to these longitudinal directions. A feed frame 20 and a clamp frame 22 that can run forward and backward are straddled in parallel.
[0018]
As shown in FIGS. 1 to 3, the cam followers 14 </ b> A and 15 </ b> A of the feed lever 14 and the clamp lever 15 are engaged with a lateral groove (not shown) perpendicular to the conveying direction formed on the lower surfaces of the feed frame 20 and the clamp frame 22. The feed frame 20 and the clamp frame 22 can be moved back and forth along the guide rails 24A and 24B within the swing range of the feed lever 14 and the clamp lever 15.
[0019]
A rear end of a pair of clamp bars 5A and 5B having a rectangular cross section is fixed to the left and right of the upper surface of the clamp frame 22 disposed in front of the guide rails 24A and 24B.
[0020]
The feed frame 20 disposed behind the guide rails 24A and 24B is configured such that the height from the upper surface 2A of the housing 2 to the upper surface is slightly higher than the clamp frame 22. The rear ends of the pair of feed bars 4A, 4B formed in the are fixed.
[0021]
Accordingly, the pair of feed bars 4A and 4B shown in FIGS. 1 and 2 are guided by the guide member 36 (see FIGS. 7, 8, and 10) on the support surfaces on the pair of clamp bars 5A and 5B, and the conveying direction. The clamp bars 5A and 5B are slidably supported by a pair of guide rails R on which linear guides 25 fixed to the lower support surface at predetermined intervals are attached on a base 26. The transfer bars TB1 and TB2 are guided and supported so as to be movable, and extend so that the front ends of the transfer bars TB1 and TB2 face the inside of the mold of the press machine M.
[0022]
On the other hand, a clamp mechanism 28 is provided on the front end side of the transfer bars TB1 and TB2, and as shown in FIG. 1, the clamp mechanism 28 is provided in a pair near the outer surfaces of the front ends of the transfer bars TB1 and TB2. Frames 30A and 30B are arranged in parallel, and a plurality of clamp claws 32A and 32B are fixed between these frames 30A and 30B, and a tip gripping portion H1 for gripping a plurality of supply workpieces. The H2s are arranged at predetermined intervals so as to face each other, and are slidably fitted in grooves that cross the upper surfaces of the pair of feed bars 4A and 4B.
[0023]
As shown in FIGS. 7 to 10, a pair of left and right inclined at a predetermined inclination angle in plan view with respect to the straight traveling direction is provided at the front and rear portions of the support surface of the pair of clamp bars 5A and 5B of the front end side transfer bars TB1 and TB2. The inclined grooves 38 are formed symmetrically, and a pair of horizontally long grooves 40 perpendicular to the straight direction are provided at the front and rear portions of the pair of feed bars 4A and 4B supported on the upper surfaces of the clamp bars 5A and 5B. It is formed so as to overlap with the inclined groove 38.
[0024]
As shown in FIG. 8, in the longitudinally front and rear portions of both frames 30A and 30B, there are inner portions corresponding to the inclined grooves 38 of the pair of clamp bars 5A and 5B and the horizontally elongated grooves 40 of the pair of feed bars 4A and 4B, respectively . A pair of actuating pieces 35 project toward the side, and are inserted flush with each other in grooves that cross the lower surfaces of the pair of feed bars 4A and 4B.
[0025]
The upper and lower surfaces of these four operating piece 35, a vertical actuating pin 34A, 34B has implanted, the lower surface of the operating pin 34A is fitted to the clamp bar 5A, a pair of left and right inclined grooves 38 of 5B The operation pins 34B on the upper surface are fitted in the laterally long grooves 40 of the feed bars 4A and 4B, respectively.
[0026]
Accordingly, due to the relative back and forth movement of the pair of clamp bars 5A and 5B and the pair of feed bars 4A and 4B, the lower operation pin 34A fitted in the pair of inclined grooves 38 is laterally moved together with the upper operation pin 34B. by reciprocating in a direction, a pair of parallel frame 30A, close to 30B in the width direction, can be separated to open and close a plurality of clamp jaws 32A, 32B simultaneously, the upper operating pin 34B, the feed bar 4A , 4B can be moved within the range of the horizontally long groove 40.
[0027]
When the lower actuating pin 34A is positioned at the front and rear ends of the inclined groove 38 in the transport direction , the upper actuating pin 34B is also located at either end of the laterally elongated groove 40. clamp jaws 32A, the feed bar 4A to 32B open or in the closed state, 4B or clamp bars 5A, the 5B, synchronously these clamp bars 5A, can be reciprocally move linearly at intervals P of 5B.
[0028]
Next, the operation of the press transfer apparatus will be described in detail below with reference to FIGS.
[0029]
As shown by the curve of the cam diagram shown in the upper part of FIG. 11, the press machine M is 180 degrees to 360 degrees when it is pressed in the process of descending from 0 degrees to 180 degrees bottom dead center. The ascending operation is performed to restore the initial position up to the top dead center.
[0030]
The press transfer device performs a reciprocating linear movement operation synchronously and relative to the longitudinal direction of the pair of feed bars 4A and 4B and the clamp bars 5A and 5B during the descending and ascending operations in which the processing operation of the press machine M is performed. It is supposed to be done.
[0031]
Next, the relationship between the feed lever and the clamp lever will be described with reference to FIG.
[0032]
The feed lever 14 shown in FIG. 6 has a range of the swing angle α in order to move the pair of feed bars 4A, 4B below the clamp bars 5A, 5B from the state moved from the longitudinal forward end to the backward end. The cam follower 14A at the tip of the feed lever 14 can be moved back and forth evenly within the range of the linear movement distance L (for example, 50 mm) while the pair of feed bars 4A and 4B are swung within the range of the swing angle α. It can be moved back and forth at distances L1 and L1.
[0033]
Further, the clamp lever 15, in order to move a pair of clamping bars 5A, from a state in which moving the 5B to longitudinal forward end to rear end, can be swung in the range of the swing angle β (> α), The cam follower 15A at the tip of the clamp lever 15 can reciprocate the pair of clamp bars 5A and 5B within a linear movement distance L + L2 (for example, 60 mm) while swinging within a swing angle β. Yes.
[0034]
That is, the clamp lever 15 has an extra linear movement distance L2 (= 10 mm) between the pair of clamp bars 5A and 5B and the linear movement distance L2 of the pair of feed bars 4A and 4B. As a result, the clamping claws 32A and 32B are clamped or unclamped.
[0035]
The initial state of the transfer bars TB1 and TB2 is at the rotation angle position S (216 degrees) in the cam diagram of FIG. 11, and as shown in FIG. 6, the cam follower 14A of the feed lever 14 and the clamp lever 15 at this time point. , 15A are located at B and B ′, and the pair of feed bars 4A, 4B and the clamp bars 5A, 5B are at the retracted position in the transport direction .
[0036]
In the cam diagram of FIG. 11, the clamping operation is performed between the rotation angle position S point (rotation angle 216 degrees) and the rotation angle position J1 point of the pair of drum cams 10 and 12, and from the rotation angle position J1 point to the K1 point. It continues to K2 point through.
[0037]
The feed lever 14 indicated by a solid line in FIG. 6 shows a state in which the pair of feed bars 4A and 4B has moved to the forward end in the transport direction , and the clamp lever 15 advances the clamp bars 5A and 5B synchronously in the transport direction. The state which moved to the end is shown.
[0038]
Clamp lever 15 shown in FIG. 6, at the same time a pair of drum cam 10, 12 being rotated, rotates counterclockwise as indicated by an arrow with the lead cam groove 12A of one of the drum cam 12.
[0039]
As a result, the clamp lever 15 is swung to the rotation angle position J1 point (257.5 degrees) in the cam diagram, whereby the clamp bars 5A and 5B are moved to the linear movement distance L2 (see FIG. 6) via the clamp frame 22 . moved, the actuating pin 34A, a plurality of supply workpieces W in Rukoto move the 34B inward in the width direction are simultaneously clamped by the clamp pawls 32A, 32B.
[0040]
Next, with the cam groove 10A of the other drum cam 10, together with the clamp lever 15 in the counterclockwise direction indicated by the arrow from the rotation angle position J1 point (257.5 degrees) of the drum cam 10 when the feed lever 14 is slightly delayed. By starting the swing , the linear distance corresponding to the interval P between the clamp claws 32A and 32B is maintained while the feed bars 4A and 4B clamp the supply workpiece W together with the clamp bars 5A and 5B via the feed frame 20. Is moved forward in the conveying direction to the rotation angle position K1 of the drum cam 10 (300 degrees).
[0041]
In this state, the feed lever 14 or the clamp lever 15 swings counterclockwise to the position shown in FIG. 6 and stops, and the cam followers 14A and 15A are located at linear distances F and F ′ , respectively. The drum cam 10 continues to rotate.
[0042]
Therefore, by the rotation of the drum cam 10, the rotation angle position K2 point clamp bars 5A clamp lever 15 is swung clockwise earlier in the 5B, feed bar 4A is stopped, 4B to relatively straight By moving backward to the movement distance L2 (rotation angle position J2 point), the operating pins 34A and 34B shown in FIGS. 7 and 8 move outward in the width direction , and the plurality of supply workpieces W are unclamped simultaneously.
[0043]
Then, the feed lever 14 also, by synchronously swinging the clamping lever 15 clockwise, the feed bar 4A, 4B and the clamp bars 5A, 5B is only moved backward linear movement distance P synchronously to the initial position .
[0044]
Therefore, according to the press transfer apparatus configured as described above, the pair of feed bars 4A and 4B and the clamps extended so as to face the mold of the press machine M by using the driving force of the press machine M. A plurality of feeds mechanically synchronized with the reciprocating linear movement and opening / closing operation of the plurality of clamp claws 32A, 32B and the machining operation of the press machine M by the interaction of the synchronous and relative linear reciprocating movements of the bars 5A, 5B. By repetitively transporting the workpiece W to the mold machining position, it is possible to simplify the mechanism mechanically by omitting the transport and clamping drive source and the detection device for checking the operation. it can.
[0045]
Further, when the forward and reverse conveying repeated multiple feed workpiece W at predetermined intervals P, conveyance start the swing angle difference between the levers during retraction (linear distance conversion L2) the clamp pawl 32A by using, 32B The clamping operation and the opening operation can be provided quickly and reliably.
[0046]
Moreover, at the clamping mechanism 28, a pair of right and left feed bars 4A to be superimposed vertically, 4B and the clamp bars 5A, only reciprocating linear movement of 5B, the pair of clamp jaws 32A, the opening and closing operation of 32B, when the clamp jaws open and close Therefore, a large number of workpieces W can be simultaneously and repeatedly conveyed by the plurality of clamp claws 32A and 32B arranged at predetermined intervals.
[0047]
Then, by the continuous rotation of the pair of drum cams 10 and 12, the feed lever 14 or the clamp lever 15 is swung within a range that is synchronized with the difference in swing angle between the levers 14 and 15 at the start of forward and reverse swing. The operation can be synchronized with the processing operation of the press machine without using a dedicated control device or sensor.
[0048]
【The invention's effect】
As described in detail above, the present invention has the following effects.
[0049]
In other words, according to the first aspect of the present invention, the pair of feed bar and clamp bar extended so as to face the inside of the die of the press machine using the driving force of the press machine are synchronized and relatively reciprocally moved back and forth. by the action, the reciprocating linear movement and opening and closing operations of a plurality of clamp jaws, by repeatedly transporting the multiple by mechanically synchronized to the processing operation of the press machine the workpiece into the mold processing position, the driving source of the conveying and clamp only Further, by omitting the detection device for checking the operation, it can be mechanically simplified, and it can be conveyed quickly and reliably. In addition, a pair of operating pins on the upper and lower surfaces of the clamp bar projecting inwardly from the longitudinal front and rear portions of the pair of frames disposed in parallel in the vicinity of both outer surfaces near the front end of the transfer bar, The pair of frames can be opened and closed in the width direction only by reciprocating linear movement of the pair of feed bars and clamp bars by being respectively fitted to the inclined grooves or the horizontally long grooves of the feed bar, and directed inward to the pair of frames. The plurality of clamp claws arranged at predetermined intervals so as to oppose each other perform an opening / closing operation and a reciprocating linear movement when the clamp claws are opened / closed, so that a large number of workpieces can be conveyed repeatedly at the same time .
[Brief description of the drawings]
FIG. 1 is an overall plan view of a press transfer apparatus according to an embodiment of the present invention.
FIG. 2 is an overall side view of the press transfer device.
FIG. 3 is a cross-sectional view taken along the line AA of FIG.
4 is a cross-sectional view taken along the line BB in FIG.
FIG. 5 is a cross-sectional view taken along the line CC of FIG.
FIG. 6 is an explanatory diagram showing a swing range of a feed lever and a clamp lever.
FIG. 7 is a partial plan view showing a relationship with an operating pin of a clamp mechanism operating piece fitted in an inclined groove of a clamp bar.
8 is an enlarged plan view of a portion X in FIG. 1 showing a state in which an operating pin and a clamp arm of the clamp mechanism are fitted in a laterally long groove of the feed bar.
9 is a cross-sectional view taken along the line DD of FIG.
10 is a cross-sectional view taken along the line EE of FIG.
FIG. 11 is an operation explanatory view showing a relationship between a cam diagram of a press machine and a cam diagram of a transfer bar or a cam diagram of a clamp mechanism.
[Explanation of symbols]
1 Press transfer device 2 Housing (base)
2A Housing top surface 4A, 4B Feed bar 6 Pulley 8 Cam shaft 4A, 4B Feed bar 5A, 5B Clamp bar 10, 12 Drum cam 10A, 12A Cam groove 14 Feed lever 14A Cam follower 15 Clamp lever 15A Cam follower 16 Feed drive shaft (first swing) Dynamic axis)
16A Holder 16B Cam follower 18 Clamp drive shaft (second swing shaft)
18A Holder 18B Cam follower 20 Feed frame 22 Clamp frame 24A, 24B Guide rail 25 Linear guide 26 Base 28 Clamp mechanism 30A, 30B Frame 32A, 32B Clamp claw 34A, 34B Actuation pin 35 Actuation piece 36 Guide member 38 Inclined groove 40 Horizontal elongated groove C1 , C2 conversion means D drive mechanism H1, H2 tip gripping part J1, J2, K1, K2 rotation angle position L1, L1 front and rear equal distance L, L2 linear movement distance M press machine P interval R guide rail TB1, TB2 transfer bar W supply Work α, β Oscillation angle

Claims (1)

In a press transfer apparatus that sequentially conveys a plurality of supply workpieces W onto a die of a press machine M using a pair of parallel transfer bars TB1 and TB2.
The transfer bars TB1 and TB2 are vertically supported by a drive mechanism D provided on the rear end side so as to be vertically reciprocated so as to be guided and supported on the base 26 and extended so that the front end faces the inside of the mold. It consists of a pair of feed bars 4A and 4B and clamp bars 5A and 5B,
At the front end side of the transfer bars TB1 and TB2, the clamp bars 5A and 5B and the feed bars 4A and 4B supported by being superimposed on the upper surfaces of the clamp bars 5A and 5B are synchronously and relatively reciprocally moved in a straight line. And a clamp mechanism 28 in which a plurality of clamp claws 32A and 32B are arranged opposite to each other at predetermined intervals in the longitudinal direction so as to perform a reciprocating rectilinear movement and an opening / closing operation orthogonal to the rectilinear movement.
The clamp mechanism 28 includes a pair of frames 30A and 30B arranged in parallel near both outer surfaces near the front ends of the transfer bars TB1 and TB2.
The clamp claws 32A and 32B are arranged at predetermined intervals in the longitudinal direction so that the tip gripping portions H1 and H2 face each other between the frames 30A and 30B, and the longitudinal direction on the pair of feed bars 4A and 4B. Guided and supported so as to be able to advance and retreat in a direction orthogonal to each other, and projecting inward from the longitudinally front and rear portions of the frames 30A and 30B, between the upper and lower feed bars 4A and 4B and the clamp bars 5A and 5B. It consists of a pair of operating pieces 35 that are coaxially provided with operating pins 34A and 34B that are guided and supported so as to be able to advance and retreat in a direction perpendicular to the longitudinal direction, and are perpendicular to the upper and lower surfaces.
A pair of left and right inclined grooves 38 that are inclined at a predetermined inclination angle in plan view with respect to the straight direction at front and rear portions of the support surfaces of the pair of clamp bars 5A and 5B to be fitted to the lower ends of the pair of operating pins 34A and 34B. Are formed symmetrically, and are orthogonal to the pair of feed bars 4A and 4B support surfaces so as to correspond to the pair of inclined grooves 38 so as to be fitted to the upper ends of the pair of operating pins 34A and 34B. A pair of horizontally long grooves 40 is formed, and the operating pins 34A are fitted in the pair of inclined grooves 38 by the relative movement of the pair of clamp bars 5A, 5B and the pair of feed bars 4A, 4B in the forward and backward directions. , 34B, and the clamp claws 32A, 32B are opened and closed, and the pair of clamp bars 5A, 5B and the pair of feed bars 4A, 4B are synchronously moved back and forth. Pressing a transfer apparatus characterized by being configured to either via the operating pin which is located at the end the clamp jaws 32A in the horizontal groove 40 of the pair, 32B are moved in the longitudinal conveying direction .

Images